float someone's boat

/F L OW1 T S AH0 M W AH0 N EH0 S B OW0 T/
verb
  1. 1

    To interest or appeal to someone; to make someone happy.

    โ€œI invited Lily to join us, but horror films don't float her boat.โ€

Source: https://en.wiktionary.org/wiki/float%20someone's%20boat